The connecting tubes do more than join spheres
The Atomium’s geometry poses a practical problem: its exhibition spaces sit in separate spheres, while visitors need a route from one level to another. The steel tubes solve both problems at once. They bridge the spheres and, in some of them, enclose escalators that carry people along the building’s angled connections.
An escalator is usually part of a corridor or station. Here, the corridor itself is a narrow tube in the structure. That means circulation—the everyday business of moving visitors through a building—becomes part of the architecture rather than something added around it. The enclosed passage also makes the journey feel like moving through the links of the Atomium’s enlarged molecular form.
A route built into the design
Connecting levels with an escalator is useful because visitors can move steadily between them without relying only on stairs. But fitting that route inside a sloping steel tube ties the experience closely to the building’s shape: the way between destinations follows the same connections that define the Atomium from the outside.
The result is a small but memorable shift in perspective. Visitors do not simply look at a model-like structure; they travel through its links, with the trip between spheres becoming part of the visit itself.
